▎ 摘　　要

NOVELTY - Preparation of a porous titanium dioxide composite material involves (s1) mixing graphene oxide, titanium dioxide, N, N'-dimethylformamide, polyvinylpyrrolidone and polyacrylonitrile to obtain a spinning solution, (s2) performing electrostatic spinning of the obtained spinning solution to obtain nano fibers, and (s3) mixing the nano-fibers with water and ethanol for hydrothermal reaction. USE - Preparation of porous titanium dioxide composite material used in photocatalytic degradation of organic matter (all claimed). ADVANTAGE - The hydrothermal reaction reduces the graphene oxide to graphene with excellent electronic conductor and lower Fermi level characteristics, which are used to make photogenerated electrons accumulated on the conduction band of titanium dioxide can flow to the graphene plane with a lower energy band position to ensure the effect of increasing the separation efficiency of photogenerated electrons and holes on titanium dioxide. The fiber is turned into a porous structure, which can increase the specific surface area of the fiber, and adsorb the target pollutants on the surface of the fiber to improve the utilization efficiency of the active species. The graphene obtained after the hydrothermal reaction produces conjugated adsorption on organic molecules, which helps to facilitate the functions of the photocatalytic nanofibers, and improve the photocatalytic ability of titanium dioxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the porous titanium dioxide composite material, which has specific surface area of 8-55 m2/g.